Yeah, if you can see all the things, it's too late. Humble Monthly is basically loot crate for games. They reveal 1, which you get as soon as you pay for the bundle, then give you 6 more games and one "Humble Exclusive" which is something you can only get from the bundle (usually a small gamejam project, an early demo, or a timed exclusive) on the first Friday of every new month.
I'd really recommend it if you can afford what essentially comes down to a $12 subscription fee. They've been doing it a little over a year now, and I've stuck with it since the start. Their selections are hit and miss, but varied enough that I've felt I've got my money's worth out of every month (except August, seriously fuck August). And anything you don't want or already own makes good little gifts to friends.